Safety device for shells.



N., W. AASEN.

' SAFETY: DEVNIE FOR SHELLS.

Armenian r-ILED- nom-.1a. 1`9| s.

Patented Jan. 30.19117.

i onine.

'NIEI'JSv WALTERSEN .AASEIL OF COPENHAGEN, DENMARK.

SAFETY DEVICE Fon sHnLLs'.

Specification of Letters Patent.

Patented J an. 30, 1917.

Application filed November 18, 1915. Serial No. 62,161.

To all whom t may concern.'

Be it known that I, NmLs WALTERSEN AAsEN, a citizen of the Kingdom of Norway,

residing at No. 2O Carl Lunds Gade, Copenfor instance, a four-winged steering tailpiece 2, made of aluminum. The firing mechanism consists of a hollow screw 3, which is screwed into the apex of the shell, and which receives a ring-pin 4 furnished with an impact-plate 410, which firing-pin is held fast to the hollow screw 3 by means of a spiral spring 5 and actuates the detonator 10 when the shell strikes. The safety-device consists of a safety-pin 7 disposed in a tube 6 which passes longitudinally through the shell. To the rear end of said safety-pin 7 there is attached a screen'or plate9 of thin and light metal, paper, pasteboard, cloth (in which case it is given the` shape of a parachute) or the like, while itsfront end carries a detachable and loosely fastened safety-piece 8, which prevents .the untimely striking of the firing-pin on the detonator 10. When the safety-piece 8 is released from the pin 7, it will, owing to its lower oblique edge, slide outward of its own accord when the impactplate 40 strikes an obstacle at the impart of the shell.

,Instead of a single safety-piece, there may be two, one on either side ofthe shell and hinged to each other, the pin 7 constituting the hinge-bolt for both of them. The safety- Biece may also be circular and held together y means of the safety-pin. When the shell is dischar ed, the air-pressure on the plate 9 will hol it back, thereby pulling out the pin 7, while the shell is passing the first ten or twelve meters of its trajectory. The iring mechanism is then set, or exposed, and will cause the shell to explode as soon as it strikes.

If the shell is dropped during transportation or in loading, the firing-mechanism will not operate, since the pin 7 cannot be drawn out except when the shell has a very great speed.

lWhen a screen or'parachute of cloth, or the like, is used instead of the plate 9, it may be disposed betweentwo of the wings 2 of the tail-piece, so that, immediately after the shell is discharged, the parachute will expand and pull out the safety-pin.

I claim:

1. In a shell, a firing pin at the front part thereof, a plate lattached to said firing pin, a safety pin having a projection at the front of said shell and adjacent the said plate, a safety piece loosely carried upon saidsafety pin and intermediate said plate and the front of the shell, and means for'automatically retracting said safety pin when the said shell is propelled.

2. In a shell, a .ring pin at the front part thereof, a plate attached to said tiring pin, a safety pin having a projection at the front of said shell and adjacent the said plate, a safety piece loosely carried upon said safety pin and intermediate said plate and the front of the shell, said safety piece having an oblique edge adjacent said shell, and means for automatically retracting said safety pin when the said shell is propelled.

3. In a shell, a irin pin at the front part thereof, a plate on sai firing pin, a movable safet piece intermediate the said plate and the ront of said shell and preventing the forcing in of said firing pin, and means forA automatically releasing said safety piece after the shell has been propelled, said means being operated b a pressure caused by the movement 'of sai shell.

In testimony that I claim the foregoing as my invention, I have signed my name 1n presence of two subscribin witnesses.

NIELS WAL ERSEN AASEN. Witnesses:

Clusif-INE YERPnRsEN, ANNA W. AAsEN. 

